Micranthes palmeri |
Micranthes tolmiei |
|
---|---|---|
Palmer's saxifrage |
alpine saxifrage, Tolmie's alpine saxifrage, Tolmie's saxifrage |
|
Habit | Plants solitary or in clumps, with bulbils on caudices. | Plants mat-forming, (stems trailing, thin, basally slightly woody), with slender, woody caudices. |
Leaves | basal; petiole flattened, 1–9 cm; blade ovate to elliptic, 2–8 cm, slightly fleshy, base attenuate, margins entire or subentire, ciliate, surfaces tangled, reddish brown-hairy. |
cauline, proximally crowded; petiole absent; blade elliptic-obovate, 0.8–1.5 cm, fleshy, base cuneate, margins entire, sometimes proximally sparsely long-ciliate, surfaces glabrous. |
Inflorescences | 30+-flowered, (flowers sometimes almost secund), very open, lax thyrses, 6–50 cm, hairy proximally, densely so distally. |
2–10-flowered, lax cymes, sometimes solitary flowers, 3–12 cm, glabrous or purplish- or pink-tipped stipitate-glandular; (bracts 1–3, proximal). |
Flowers | sepals erect to ascending, ovate to triangular; petals white, not spotted, broadly oblong to elliptic, not clawed, 3–6 mm, 2+ times as long as sepals; filaments linear, flattened; pistils distinct almost to base; ovary ± superior, (to 1/3 adnate to hypanthium). |
sepals erect to spreading, ovate; petals white, not spotted, linear to oblanceolate, 2.5–5 mm, longer than sepals, short- or not clawed; filaments broadly club-shaped (± petaloid); pistils connate to 1/2 their lengths; ovary ± superior (to 1/4 adnate to hypanthium). |
Capsules | green with reddish or purplish tinge, or reddish purple, folliclelike. |
green, purple mottled, valvate. |
2n | = 30. |
|
Micranthes palmeri |
Micranthes tolmiei |
|
Phenology | Flowering spring. | Flowering summer. |
Habitat | Rocky, open woodlands | Arctic and alpine tundra, fell-fields |
Elevation | 100-1000 m (300-3300 ft) | 500-4000 m (1600-13100 ft) |
Distribution |
AR; OK |
AK; CA; ID; MT; NV; OR; UT; WA; BC
|
Discussion | Unlike those of most Micranthes species, the leaves of M. tolmiei are proximally cauline and the ovules have two integuments. The seeds have a loose, winglike testa. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 8, p. 61. | FNA vol. 8, p. 54. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Saxifraga palmeri, Saxifraga virginiensis var. subintegra | Saxifraga tolmiei, Saxifraga tolmiei var. ledifolia |
Name authority | Bush: Amer. Midl. Naturalist 11: 221. 1928 , | (Torrey & A. Gray) Brouillet & Gornall: J. Bot. Res. Inst. Texas 1: 1022. 2007 , |
Web links |
|